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Optimization of Process Parameters using Response Surface Methodology (RSM): Removal of Cr (VI) from Aqueous Solution by Wood Apple Shell Activated Carbon (WASAC)

Author Affiliations

  • 1Department of Chemical Engineering, Motilal Nehru National Institute of Technology, Allahabad-211004, UP, INDIA

Res.J.chem.sci., Volume 3, Issue (7), Pages 31-37, July,18 (2013)


Industries like tannery, electroplating, textiles etc. have large quantities of heavy metal ions in their effluents which are toxic for human beings. Present paper deals with the study of Cr (VI) removal from aqueous solution by wood apple shell activated carbon (WASAC) using batch experiment. The effect of different process parameters like pH, agitation time, adsorbent dosage and initial concentration were determined. The final filtrate of Cr (VI) solution was analyzed by photo-spectrometer with a wavelength of 540 nm. Initially the process parameter was set at an optimum value of pH 2 and max agitation speed of 140 rpm, further WASAC dosage, Cr (VI) initial concentration and agitation time were optimized for their combined effect using Response Surface Method (RSM). RSM method obtained a correlation between these factors and maximum removal of 98% Cr (VI) was achieved at 500 mg of adsorbent dosage (in 50 ml solution), 176.2 min of agitation time and 95.67 mg/L of Cr (VI) concentration, respectively. This investigation results revealed that WASAC can be used as an alternative adsorbents for removal of Cr (VI from aqueous solution. Moreover, wood apple shell is abundantly available in nature and hence economical for heavy metal removal.


  1. Kortenkamp A., Casadevall M., Faux S.P., Jenner A., Shayer R.O.J., Woodbridge N. and O’brien P., A role for molecular oxygen in the formation of DNA damage during the reduction of the carcinogen chromium (VI) by glutathione, Arch. Biochem. and Biophys., 329 (2), 199-208 (1996)
  2. Moreno-Virgen R.M., Tovar-Gómez R., Mendoza-Castillo D.I. and Bonilla A., Applications of activated carbons obtained from lignocellulosic materials for the wastewater treatment. Petriciolet, Instituto Tecnológico de Aguascalientes, México (2012)
  3. Kishore K.K., Parimala V. and Meng X., Detoxification of chromium (VI) in coastal water using lignocellulosic agricultural waste. Water SA., 30(4), (2004)
  4. Patterso J.W., Industrial Wastewater Treatment Technology, nd Ed. Butterworth-Heinemann, London (1985)
  5. Dakiky M., Khamis M., Manassra A. and Mereb M., Selective adsorption of chromium (VI) in industrial wastewater using low-cost abundantly available adsorbents. Adv. Environ. Res.,6 (4), 533-540 (2002)
  6. Mahvi A.H., Naghipour D., Vaezi F. and Nazmara S., Teawaste as an adsorbent for heavy metal removal from industrial wastewaters, Am.J. Appl. Sci.,2 (1), 372- 375 (2005)
  7. Espinola A., Adamian R. and Gomes L.M.B., An innovative technology: natural coconut fibre as adsorptive medium in industrial wastewater cleanup, Proc. TMS Fall Extract. and Proc. Conf., 3, 2057-2066 (1999)
  8. Melo M. and Disouza S.F., Removal of chromium by mucilaginous seeds of Ocimum Basilicu. Bioresour. Technol., 92 (2), 151-155 (2004)
  9. Marshall W.E. and Champange E.T., Agricultural byproducts as adsorbents for metal ions in laboratory prepared solutions and in manufacturing wastewater, J. Environ. Sci. and Health -Part A Environ. Sci. and Eng.,30 (2), 241-261 (1995)
  10. Teixeria T., Cesar R., Zezzi A. and Marco A., Biosorption of heavy metals using rice milling by-products. Characterisation and application for removal of metals from aqueous solutions, Chemosphere,54 (7), 905-915 (2004)
  11. Saeed A., Iqbal M. and Akhtar M. W., Application of biowaste materials for the sorption of heavy metals in contaminated aqueous medium, Pak. J. of Sci. and Indust. Res., 45 (3), 206-211 (2002)
  12. Sartape A.S., Raut P.D. and Kolekar S.S., Efficient adsorption of Cr (VI) from aqueous solution on low cost adsorbent developed from Limonia acidissima (Wood apple) shell, Adsorp. Sci. and Technol.,28 (6), 547-560 (2010)
  13. Altenor S., Carene-Melane B. and Gaspard S. Activated carbons from lignocellulosic waste materials for water treatment: a review, Int. J. Env. Tech. and Manag., 10(3-4), 308-326 (2009)
  14. Elizalde G.M.P., Mattusch J., Peláez-Cid, A.A. and Wennrich R., Characterization of adsorbent materials prepared from avocado kernel seeds: natural, activated and carbonized forms, J. Analy. and Appl. Pyrol.,78 (1), 185-193 (2007)
  15. Mohamed A.R., Mohammadi M. and Darzi G.N., Preparation of carbon molecular sieve from lignocellulosic biomass: A review, Ren. Sus. Ener. Rev., 14(6), 1591-1599 (2010)
  16. Sharma Y.C. and Weng C.H., Removal of chromium (VI) from water and wastewater by using riverbed sand: Kinetic and equilibrium studies, J. Hazard. Mater. 142, 449–454 (2007)
  17. Lee S.M., Kim W.G., Laldawngliana C. and Tiwari D., Removal Behavior of Surface Modified Sand for Cd(II) and Cr(VI) from Aqueous Solutions, J. Chem. Eng. Data,55, 3089–3094 (2010)
  18. Sharma Y.C., Uma S.N.U. and Weng C.H., Studies on an economically viable remediation of chromium rich waters and wastewaters by PTPS fly ash Colloids and Surfaces, Physicochem. Eng. Aspects,317, 222–228 (2008)
  19. Sarkar D., Das S.K., Mukherjee P. and Bandyopadhyay A., Proposed Adsorption diffusion model for characterizing chromium(VI) removal using dried water hyacinth roots, Clean – Soil, Air, Water, 38, 764–770 (2010)
  20. Pehlivan E. and Altun T., Biosorption of chromium (VI) ion from aqueous solutions using walnut, hazelnut and almond shell, J. Hazard. Mater.,155 (2008)
  21. M. Bansal, D.Singh, V.K. Garg, A comparative study for the removal of hexavalent chromium from aqueous solution by agriculture wastes’ carbons, J. Hazard. Mater, 171, 83–92, (2009)
  22. Harman G., Patrick R. and Spittler T., Removal of heavy metals from polluted waters using lignocellulosic agricultural waste products, Indust. Biotechnol., (3)4, 366-374 2007
  23. Andre I.K. and Mukhopadhyay S., Response surface methodology, WIREs Comp. Stat. (2), 128–149 (2010)
  24. Bezerraa M.A., Santelli R.E., Oliveira E.P., Villar L.S. and Escale L.A.E., Response surface methodology (RSM) as a tool for optimization in analytical chemistry, Talanta, (76),965–977 (2008)